CLASS 7 CHAPTER 4 Air MCQs

mcqs = [ (“What is the blanket of air surrounding the Earth called?”, {“A”: “Lithosphere”, “B”: “Atmosphere”, “C”: “Hydrosphere”, “D”: “Biosphere”}, “B”), (“Which gas makes up the largest portion of the Earth’s atmosphere?”, {“A”: “Oxygen”, “B”: “Carbon dioxide”, “C”: “Nitrogen”, “D”: “Hydrogen”}, “C”), (“What effect does carbon dioxide have on the Earth’s atmosphere?”, {“A”: “It cools the atmosphere”, “B”: “It traps heat and contributes to the greenhouse effect”, “C”: “It only supports plant growth”, “D”: “It decreases the oxygen level”}, “B”), (“What layer of the atmosphere contains most of the weather phenomena like rainfall and fog?”, {“A”: “Stratosphere”, “B”: “Mesosphere”, “C”: “Troposphere”, “D”: “Exosphere”}, “C”), (“How do bacteria in the soil help plants use nitrogen?”, {“A”: “By absorbing nitrogen directly from the atmosphere”, “B”: “By converting nitrogen into a form usable by plants”, “C”: “By increasing the oxygen content in the soil”, “D”: “By preventing other plants from using nitrogen”}, “B”), (“What is the primary function of the ozone layer in the atmosphere?”, {“A”: “To absorb heat from the sun”, “B”: “To protect Earth from harmful ultraviolet (UV) radiation”, “C”: “To produce oxygen”, “D”: “To trap greenhouse gases”}, “B”), (“In which layer of the atmosphere is the ozone layer primarily located?”, {“A”: “Troposphere”, “B”: “Stratosphere”, “C”: “Mesosphere”, “D”: “Exosphere”}, “B”), (“Which layer of the atmosphere is closest to the Earth’s surface?”, {“A”: “Exosphere”, “B”: “Stratosphere”, “C”: “Troposphere”, “D”: “Mesosphere”}, “C”), (“What role does the troposphere play in the atmosphere?”, {“A”: “It reflects UV radiation”, “B”: “It is where weather phenomena like clouds and storms occur”, “C”: “It is the coldest layer”, “D”: “It contains the ozone layer”}, “B”), (“Which gas is primarily responsible for absorbing the sun’s ultraviolet rays?”, {“A”: “Oxygen”, “B”: “Carbon dioxide”, “C”: “Nitrogen”, “D”: “Ozone”}, “D”), (“What is the greenhouse effect?”, {“A”: “The process by which plants absorb sunlight”, “B”: “The trapping of heat by greenhouse gases in the atmosphere”, “C”: “The increase in surface temperatures due to ozone depletion”, “D”: “The cooling of the Earth’s surface”}, “B”), (“Which of the following gases is NOT considered a greenhouse gas?”, {“A”: “Carbon dioxide”, “B”: “Methane”, “C”: “Oxygen”, “D”: “Nitrous oxide”}, “C”), (“How do human activities contribute to the greenhouse effect?”, {“A”: “By planting more trees”, “B”: “By reducing fossil fuel consumption”, “C”: “By burning fossil fuels and deforestation”, “D”: “By increasing the ozone layer”}, “C”), (“What is a consequence of global warming?”, {“A”: “Decrease in sea levels”, “B”: “Expansion of polar ice caps”, “C”: “More extreme weather patterns”, “D”: “Reduction of carbon emissions”}, “C”), (“Which of the following actions can help reduce the impact of global warming?”, {“A”: “Using more fossil fuels”, “B”: “Increasing energy efficiency and using renewable energy sources”, “C”: “Deforestation”, “D”: “Expanding urban areas”}, “B”), (“What is the main source of energy for the Earth’s climate system?”, {“A”: “The Moon”, “B”: “Fossil fuels”, “C”: “The Sun”, “D”: “Geothermal energy”}, “C”), (“How does the sun’s energy reach the Earth?”, {“A”: “Through conduction”, “B”: “Through convection”, “C”: “Through radiation”, “D”: “Through reflection”}, “C”), (“What is the term for the uneven heating of the Earth’s surface?”, {“A”: “Convection currents”, “B”: “Solar energy”, “C”: “Climate change”, “D”: “Thermal gradients”}, “D”), (“Which phenomenon causes winds and ocean currents?”, {“A”: “The greenhouse effect”, “B”: “Earth’s rotation and uneven heating”, “C”: “Volcanic eruptions”, “D”: “Tsunamis”}, “B”), (“What is the Coriolis effect?”, {“A”: “The change in wind direction due to Earth’s rotation”, “B”: “The warming of ocean currents”, “C”: “The sinking of cold air”, “D”: “The formation of clouds”}, “A”), (“What is climate?”, {“A”: “The average weather conditions over a short period”, “B”: “The typical atmospheric conditions over a long period”, “C”: “A sudden change in weather”, “D”: “The temperature of the atmosphere at a given time”}, “B”), (“Which factor primarily influences the climate of a region?”, {“A”: “The type of vegetation”, “B”: “The geographical location and features”, “C”: “The time of year”, “D”: “The amount of rainfall”}, “B”), (“What are the two main types of climate?”, {“A”: “Tropical and polar”, “B”: “Desert and temperate”, “C”: “Continental and oceanic”, “D”: “Wet and dry”}, “A”), (“What does the term ‘microclimate’ refer to?”, {“A”: “The overall climate of the Earth”, “B”: “A climate that differs from the surrounding area due to local conditions”, “C”: “The climate in urban areas only”, “D”: “The average weather in a large region”}, “B”), (“Which phenomenon describes the gradual change in climate patterns over an extended period?”, {“A”: “Weathering”, “B”: “Climate change”, “C”: “Seasonal variation”, “D”: “Natural disaster”}, “B”), (“What is global warming?”, {“A”: “A temporary rise in temperature”, “B”: “An increase in Earth’s average temperature due to greenhouse gases”, “C”: “A cooling effect on the planet”, “D”: “A natural cycle of climate change”}, “B”), (“Which human activity contributes significantly to global warming?”, {“A”: “Planting trees”, “B”: “Using renewable energy sources”, “C”: “Burning fossil fuels”, “D”: “Recycling materials”}, “C”), (“What is one of the main effects of global warming?”, {“A”: “Increase in ice cover in polar regions”, “B”: “Rise in sea levels due to melting ice”, “C”: “Stabilization of weather patterns”, “D”: “Reduction in carbon dioxide levels”}, “B”), (“What role do forests play in combating climate change?”, {“A”: “They produce greenhouse gases”, “B”: “They absorb carbon dioxide and provide oxygen”, “C”: “They increase soil erosion”, “D”: “They have no effect on climate change”}, “B”), (“What is one way to mitigate the effects of climate change?”, {“A”: “Reducing the use of public transport”, “B”: “Promoting energy efficiency and the use of renewable energy”, “C”: “Increasing deforestation”, “D”: “Using more plastic products”}, “B”), (“What is the primary cause of acid rain?”, {“A”: “Natural water sources”, “B”: “Pollution from vehicles and industrial activities”, “C”: “Soil erosion”, “D”: “Plant respiration”}, “B”), (“Which of the following is a consequence of acid rain?”, {“A”: “Improved plant growth”, “B”: “Damage to aquatic ecosystems”, “C”: “Increase in soil fertility”, “D”: “Reduction of greenhouse gases”}, “B”), (“What is the term for a gradual change in the Earth’s climate due to human activities?”, {“A”: “Seasonal variation”, “B”: “Natural disaster”, “C”: “Climate change”, “D”: “Erosion”}, “C”), (“How does deforestation contribute to climate change?”, {“A”: “By increasing oxygen levels”, “B”: “By reducing the carbon dioxide absorption capacity of trees”, “C”: “By enhancing biodiversity”, “D”: “By promoting soil health”}, “B”), (“Which of the following actions can help reduce air pollution?”, {“A”: “Using more fossil fuels”, “B”: “Promoting public transportation and electric vehicles”, “C”: “Increasing industrial emissions”, “D”: “Encouraging single-use plastics”}, “B”), (“What is a major effect of air pollution on human health?”, {“A”: “Improved respiratory function”, “B”: “Increased risk of respiratory diseases”, “C”: “Enhanced physical performance”, “D”: “Reduced allergies”}, “B”), (“Which of the following is a common greenhouse gas?”, {“A”: “Nitrogen”, “B”: “Carbon dioxide”, “C”: “Oxygen”, “D”: “Argon”}, “B”), (“What is one impact of climate change on weather patterns?”, {“A”: “Increased predictability of weather”, “B”: “More extreme weather events”, “C”: “Stabilization of temperatures”, “D”: “Reduction of precipitation”}, “B”), (“What is an important step individuals can take to reduce their carbon footprint?”, {“A”: “Driving cars more frequently”, “B”: “Using energy-efficient appliances”, “C”: “Increasing use of plastic products”, “D”: “Consuming more meat”}, “B”), (“How does climate change affect biodiversity?”, {“A”: “It has no impact on biodiversity”, “B”: “It can lead to loss of habitats and species extinction”, “C”: “It enhances species adaptation”, “D”: “It stabilizes ecosystems”}, “B”), (“What is the term for the gradual increase in Earth’s average temperature due to human activities?”, {“A”: “Global warming”, “B”: “Climate change”, “C”: “Greenhouse effect”, “D”: “Acid rain”}, “A”), (“Which human activity contributes the most to global warming?”, {“A”: “Deforestation”, “B”: “Using renewable energy sources”, “C”: “Planting trees”, “D”: “Recycling materials”}, “A”), (“What is one consequence of global warming on polar ice caps?”, {“A”: “Expansion of ice cover”, “B”: “Melting of glaciers and ice sheets”, “C”: “Increased thickness of ice”, “D”: “Stabilization of sea levels”}, “B”), (“How does deforestation contribute to climate change?”, {“A”: “By increasing the amount of oxygen”, “B”: “By reducing the number of trees that absorb carbon dioxide”, “C”: “By enhancing biodiversity”, “D”: “By promoting soil health”}, “B”), (“Which of the following practices can help mitigate climate change?”, {“A”: “Using more plastic bags”, “B”: “Reducing energy consumption and increasing energy efficiency”, “C”: “Expanding urban areas without planning”, “D”: “Increasing reliance on fossil fuels”}, “B”), (“What is the primary purpose of the Paris Agreement?”, {“A”: “To promote fossil fuel usage globally”, “B”: “To reduce greenhouse gas emissions and limit global warming”, “C”: “To establish trade agreements between countries”, “D”: “To enhance agricultural productivity”}, “B”), (“Which of the following is a key objective of climate action?”, {“A”: “To increase the consumption of plastic”, “B”: “To protect ecosystems and promote sustainable development”, “C”: “To reduce public transportation”, “D”: “To encourage deforestation”}, “B”), (“What role do international organizations play in combating climate change?”, {“A”: “They have no significant impact”, “B”: “They provide funding and support for climate initiatives”, “C”: “They promote industrial growth”, “D”: “They focus solely on economic policies”}, “B”), (“Which of the following actions can individuals take to reduce their carbon footprint?”, {“A”: “Using more single-use plastics”, “B”: “Driving less and using public transport”, “C”: “Eating more meat”, “D”: “Increasing energy consumption”}, “B”), (“What is one benefit of transitioning to renewable energy sources?”, {“A”: “It increases greenhouse gas emissions”, “B”: “It helps decrease reliance on fossil fuels”, “C”: “It raises energy costs significantly”, “D”: “It has no impact on climate change”}, “B”) ]